IMO Mathematics Olympiad Class 10: Questions 482  487 of 958
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Question number: 482
Question
Two dice are thrown simultaneously. The probability of getting a doublet or a total of 4 is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 483
Question
The king, queen and jack of Spades are removed from a deck of 52 playing cards and then wellshuffled. One card is selected from the remaining cards. The probability of getting a Spades is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 484
Question
The average of 15 results is 50. If the average of the first six results is 82 and that of the last six is 62, then the sixth result is ________
Choices
Choice (4)  Response  

a.  57 

b.  58 

c.  59 

d.  60 

Question number: 485
Question
The king, queen and jack of clubs are removed from a deck of 52 playing cards and then wellshuffled. One card is selected from the remaining cards. The probability of getting a ‘8’ of black color is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 486
Question
Find the area of the quadrilateral, the coordinates of whose angular points taken in order are.
Choices
Choice (4)  Response  

a.  712 

b.  146 

c.  115 

d.  184 

Question number: 487
Question
The mean of 10 observations is. if each observation is multiplied by 4, then what is the new mean?
Choices
Choice (4)  Response  

a.  50 

b.  70 

c.  30 

d.  60 
